Re: ext3-2.4-0.9.6

["Stephen C. Tweedie" <sct@redhat.com>]

Hi,

On Sun, Aug 12, 2001 at 04:38:41AM +0200, Ralf Baechle wrote:
> On Sat, Aug 11, 2001 at 06:40:22PM -0700, Andrew Morton wrote:
> 
> > - ext3 has for a long time had developer code which allows the target device
> >   to be turned read-only at the disk device driver level a certain number
> >   of jiffies after the fs was mounted.  This is to allow scripted testing
> >   of crash recovery.  This facility has been extended to support two devices;
> >   one for the filesystem and one for the external journal device.
> 
> Would this facility also be able to deal with parts of a device becoming
> read-only unexpectedly?  Some of the disks I have in RAIDs have the
> nice habit of disabling write access when overheating.  That's an
> interesting failure scenario in a RAID system.

No, that particular part of the ext3 patch is only there for testing
--- it forces a single device readonly to simulate a crash.  It adds
no ability to deal cleanly with a device unexpectedly going readonly
on its own. 

Cheers,
 Stephen